CN109605149A - A kind of reducing steel tube bar device for grinding outer wall - Google Patents

A kind of reducing steel tube bar device for grinding outer wall Download PDF

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Publication number
CN109605149A
CN109605149A CN201910057326.0A CN201910057326A CN109605149A CN 109605149 A CN109605149 A CN 109605149A CN 201910057326 A CN201910057326 A CN 201910057326A CN 109605149 A CN109605149 A CN 109605149A
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CN
China
Prior art keywords
tubing string
wall
rotation
screw rod
steel tube
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201910057326.0A
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Chinese (zh)
Other versions
CN109605149B (en
Inventor
冯文辉
王晓东
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
QINGDAO LINHUI STEEL STRUCTURE Co Ltd
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QINGDAO LINHUI STEEL STRUCTURE Co Ltd
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Priority to CN201910057326.0A priority Critical patent/CN109605149B/en
Publication of CN109605149A publication Critical patent/CN109605149A/en
Application granted granted Critical
Publication of CN109605149B publication Critical patent/CN109605149B/en
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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B24GRINDING; POLISHING
    • B24BMACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B5/00Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor
    • B24B5/36Single-purpose machines or devices
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B24GRINDING; POLISHING
    • B24BMACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B41/00Component parts such as frames, beds, carriages, headstocks
    • B24B41/06Work supports, e.g. adjustable steadies
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B24GRINDING; POLISHING
    • B24BMACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B5/00Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor
    • B24B5/35Accessories

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Grinding Of Cylindrical And Plane Surfaces (AREA)

Abstract

The invention discloses a kind of reducing steel tube bar device for grinding outer wall, are related to steel pipe pole processing technique field, are easy to slip mainly for solving the problems, such as that the polishing of reducing steel tube bar clamps;The grinding device, including polishing table, polishing table upper end is provided with to clamp system and workpiece polishing mechanism that steel pipe pole is fixed, the clamp system includes being rotatablely installed in the rotation tubing string on polishing table, rotation tubing string is in be fixed with the mandril being distributed in a ring on the bar wall for be vertically arranged and rotate tubing string, mandril tilts upwards and mandril upper end is hinged with supporting plate, the rotation pipe top end is provided with clamping component, the clamping component includes being interspersed in the rotary screw rod being threadedly engaged inside rotation tubing string and therewith, the fixing sleeve of connection fixed thereto is arranged on the rotary screw rod shaft part, the lateral wall of fixing sleeve, which is provided with, to hold down assembly.The configuration of the present invention is simple, firm convenient for being fixedly clamped and consolidating, reciprocating comprehensive polishing, grinding effect is uniform, and practicability is stronger.

Description

A kind of reducing steel tube bar device for grinding outer wall
Technical field
The present invention relates to steel pipe pole processing technique field, specifically a kind of reducing steel tube bar device for grinding outer wall.
Background technique.
Electric power transmission line steel pipe pole is to be widely used in one of urban and rural power grids transmission line of electricity equipment supporter and similar Product (water, mud bar, angle steel tower etc.) is compared, it is with good appearance, and light-weight, occupied area is small, durable, is able to satisfy more times The load of road large-section lead needs and angle pole does not set the intensity requirement of bracing wire and is widely used.With holding for national economy Continuous fast development, the demand to electric power is increasing, especially at present on the occasion of the peak period of urban network restructuring, power transmission line steel pipe rod Market demand increasingly increase, continue to have an optimistic view of in following market.
Steel pipe pole is that the circle with certain taper is rolled by steel plate, so need to carry out grinding process, and variable diameter steel Tube rod grinding device, which is fixedly clamped for it, is easy to produce slippage, and grinding effect is unobvious.
Summary of the invention
The purpose of the present invention is to provide a kind of reducing steel tube bar device for grinding outer wall, to solve reducing steel tube bar polishing folder It is tight to be easy the problem of slipping.
To achieve the above object, the invention provides the following technical scheme:
A kind of reducing steel tube bar device for grinding outer wall, including polishing table, polishing table upper end are provided with to that steel pipe pole is fixed Clamp system and workpiece polishing mechanism, polishing table lower end surface are provided with more supporting leg columns, the clamp system include rotational installation in Rotation tubing string on polishing table, rotation tubing string are in be fixed with the top being distributed in a ring on the bar wall for be vertically arranged and rotate tubing string Bar, mandril tilts upwards and mandril upper end is hinged with supporting plate, and the rotation pipe top end is provided with clamping component, the clamping Component includes being interspersed in the rotary screw rod being threadedly engaged inside rotation tubing string and therewith, and rotary screw rod top is fixedly connected with rotation Handwheel, the fixing sleeve of connection fixed thereto is arranged on the rotary screw rod shaft part, and the lateral wall of fixing sleeve is provided with compression group Part;
The workpiece polishing mechanism includes fixed frame, rotary screw rod, grinding disc and the guide rod in upright state, the rotary screw rod installation In being arranged with screw-casing with matching on fixed frame, on rotary screw rod, screw-casing avris is fixed with guide sleeve, and guide rod is interspersed Inside guide sleeve and grinding disc is articulated with guide rod and is provided with restriction cunning on the end of rotation tubing string, the fixed hack lever wall Slot limits the restriction sliding block for being provided in sliding slot and sliding cooperation up and down therewith, limits the fixed company in sliding block end face and guide sleeve end It connects, guide rod is provided with baffle far from one end of grinding disc, and baffle is connected to by holddown spring and limits sliding block end face, the polishing The power mechanism to drive the rotation of rotation tubing string and the rotation of rotary screw rod positive and negative alternate is additionally provided on the downside of platform.
Based on the above technical solution, the present invention also provides following optional technical solutions:
In a kind of optinal plan: being provided with non-slip mat on the supporting plate end face.
In a kind of optinal plan: described to hold down assembly as four and annular spread is in fixing sleeve side wall, hold down assembly packet Compression bar pipe and the restriction set for being fixed on fixing sleeve side wall are included, the compression bar pipe is internally provided with the oscillating rod for sliding cooperation therewith, The outer end of oscillating rod is hinged with the hinged seat limited inside set is arranged in, and the hinged place of the oscillating rod and hinged seat is located at It limits on the outside of set port.
In a kind of optinal plan: being additionally provided with base plate on the downside of the polishing table, more supporting leg column bottom ends are fixed on Base plate upper surface.
In a kind of optinal plan: the power mechanism includes being rotatablely installed in the transmission horizontal axis on supporting leg column, transmission Horizontal axis one end is connected to the driving motor being arranged on supporting leg column side wall, and transmission horizontal axis and rotation tubing string bottom end are provided with biography Dynamic bevel gear, two drive bevel gears are meshed, and transmission horizontal axis is also set up there are two opposite incomplete bevel gear, and two endless Full bevel gear alternately engages with the rotating bevel gear that rotary screw rod bottom end is arranged in.
A kind of steel pipe pole polishing system comprising reducing steel tube bar device for grinding outer wall as described above.
Compared to the prior art, beneficial effects of the present invention are as follows:
1, it is convenient for reducing steel tube rod set being located at rotation tubing string by supporting plate, mandril and positioned at the clamping component for rotating tubing string upper end Upper fixation clamps securely and convenient for operation;
2, grinding disc is driven to be close on the outside of reducing steel tube bar by the positive and negative alternate rotation of rotary screw rod and guide rod, holddown spring Wall, and then reciprocally formula is polished, efficiency is higher and polishing is comprehensive, and effect is preferable;
3, the configuration of the present invention is simple, firm convenient for being fixedly clamped and consolidating, reciprocating comprehensive polishing, grinding effect is uniform, practical Property is stronger.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention.
Fig. 2 is the side structure schematic view to hold down assembly in the present invention.
Fig. 3 is the overlooking structure diagram to hold down assembly in the present invention.
Appended drawing reference annotation: polishing table 1, rotation tubing string 2, supporting plate 3, mandril 4, non-slip mat 5, rotary screw rod 6, fixing sleeve 7, Rotation hand wheel 8, transmission horizontal axis 9, drive bevel gear 10, driving motor 11, fixed frame 12, rotary screw rod 13, grinding disc 14, spiral Set 15, guide rod 17, limits sliding block 18, holddown spring 19, baffle 20, rotating bevel gear 21, incomplete bevel gear at guide sleeve 16 22, base plate 23, the 24, oscillating rod 25 that holds down assembly, compression bar pipe 26, restriction set 27, hinged seat 28, restriction sliding slot 29, supporting leg Column 30.
Specific embodiment
Following embodiment can be described in detail the present invention in conjunction with attached drawing, in attached drawing or explanation, similar or identical part Using identical label, and in practical applications, shape, thickness or the height of each component can be expanded or shunk.Institute of the present invention Each embodiment enumerated is only to illustrate the present invention, is not used to limit the scope of the present invention.It is made for the present invention any aobvious And modification easy to know or change are without departure from spirit and scope of the invention.
Embodiment 1
Please refer to Fig. 1~3, in the embodiment of the present invention, a kind of reducing steel tube bar device for grinding outer wall, including polishing table 1, polishing table 1 upper end is provided with to clamp system and workpiece polishing mechanism that steel pipe pole is fixed, and 1 lower end surface of polishing table is provided with more supporting legs Column 30, the clamp system include being rotatablely installed in the rotation tubing string 2 on polishing table 1, and rotating tubing string 2 is in be vertically arranged and rotate The mandril 4 being distributed in a ring is fixed on the bar wall of tubing string 2, mandril 4 tilts upwards and 4 upper end of mandril is hinged with supporting plate 3, holds in the palm Non-slip mat 5 is provided on 3 end face of plate, the setting of non-slip mat 5 can increase the frictional force between steel pipe pole inner wall, the rotation 2 top of tubing string is provided with clamping component, and the clamping component includes turn for being interspersed in 2 inside of rotation tubing string and being threadedly engaged therewith Dynamic screw rod 6,6 top of rotary screw rod is fixedly connected with rotation hand wheel 8, is arranged with company fixed thereto on 6 shaft part of rotary screw rod The fixing sleeve 7 connect, the lateral wall of fixing sleeve 7, which is provided with, holds down assembly 24, it is described hold down assembly 24 as four and annular spread in 7 side wall of fixing sleeve, hold down assembly 24 include compression bar pipe 26 and be fixed on 7 side wall of fixing sleeve restriction set 27, the compression bar pipe 26 It is internally provided with the oscillating rod 25 for sliding cooperation therewith, the outer end of oscillating rod 25 and the hinged seat being arranged in inside restriction set 27 28 are hinged, and the hinged place of the oscillating rod 25 and hinged seat 28, which is located at, to be limited on the outside of 27 ports of set, and oscillating rod 25 is in a vertical shape When state, then oscillating rod 25 is dialed to horizontality, by compression bar pipe 26 convenient for being set on rotation tubing string 2 by such steel pipe pole End push-in limits inside set 27, and then pressure may make to be in a horizontal state, and makes rotary screw rod finally by rotation hand wheel 8 is screwed 6 screw in rotation tubing strings 2, and hold down assembly and 24 move down and compress cooperation supporting plate 3 at the top of steel pipe pole and be fixedly clamped to steel pipe pole;
The workpiece polishing mechanism includes fixed frame 12, rotary screw rod 13, grinding disc 14 and the guide rod 17 in upright state, the rotation Screw rod 13 is installed on fixed frame 12, and screw-casing 15 with matching is arranged on rotary screw rod 13, and 15 avris of screw-casing is solid Surely there is guide sleeve 16, guide rod 17 is interspersed in 16 inside of guide sleeve and grinding disc 14 is articulated with guide rod 17 close to the end of rotation tubing string 2 Portion is provided on the 12 bar wall of fixed frame and limits sliding slot 29, limits and is provided with therewith the limit of sliding cooperation up and down in sliding slot 29 Fixed slider 18 limits 18 end face of sliding block and is fixedly connected with 16 end of guide sleeve, and guide rod 17 is provided with far from one end of grinding disc 14 Baffle 20, baffle 20 by holddown spring 19 be connected to limit 18 end face of sliding block, the downside of the polishing table 1 be additionally provided with to The power mechanism of the driving rotation of rotation tubing string 2 and the rotation of 13 positive and negative alternate of rotary screw rod, the power mechanism include rotational installation In the transmission horizontal axis 9 on supporting leg column 30, it is driven 9 one end of horizontal axis and is connected to the driving motor being arranged on 30 side wall of supporting leg column 11, transmission horizontal axis 9 and rotation 2 bottom end of tubing string are provided with drive bevel gear 10, and two drive bevel gears 10 are meshed, and transmission is horizontal Axis 9 is also set up there are two opposite incomplete bevel gear 22, and two incomplete bevel gears 22 are with setting in 13 bottom end of rotary screw rod Rotating bevel gear 21 alternately engage, be additionally provided with base plate 23 on the downside of the polishing table 1, more 30 bottom ends of supporting leg column are fixed In 23 upper surface of base plate.
Steel pipe pole is fixed on 2 outside of rotation tubing string by clamp system, driving motor 11 drives transmission horizontal axis 9 to rotate, It is driven horizontal axis 9 and rotation tubing string 2 is driven by drive bevel gear 10, so that steel pipe pole rotates, and driving motor 11 is by turning Dynamic bevel gear 21 is engaged with the alternating of two incomplete bevel gears 22 so that 13 positive and negative rotation of rotary screw rod, so that guide sleeve 16 move back and forth up and down, and grinding disc 14 is against always on steel pipe pole lateral wall under the action of holddown spring 19, and then can be right The comprehensive grinding process of steel pipe pole outer wall, efficiency are higher.
Embodiment 2
A kind of steel pipe pole polishing system comprising the reducing steel tube bar device for grinding outer wall as described in embodiment one.
The above, the only specific embodiment of the disclosure, but the protection scope of the disclosure is not limited thereto, it is any Those familiar with the art can easily think of the change or the replacement in the technical scope that the disclosure discloses, and should all contain It covers within the protection scope of the disclosure.Therefore, the protection scope of the disclosure should be subject to the protection scope in claims.

Claims (6)

1. a kind of reducing steel tube bar device for grinding outer wall, including polishing table (1), polishing table (1) upper end is provided with to by steel pipe Bar fixed clamp system and workpiece polishing mechanism, polishing table (1) lower end surface are provided with more supporting leg columns (30), which is characterized in that The clamp system includes rotational installation in the rotation tubing string (2) on polishing table (1), and rotating tubing string (2) is in be vertically arranged and turn The mandril (4) being distributed in a ring is fixed on the bar wall of dynamic tubing string (2), mandril (4) tilts upwards and mandril (4) upper end is hinged Have supporting plate (3), rotation tubing string (2) top is provided with clamping component, and the clamping component includes being interspersed in rotation tubing string (2) Rotary screw rod (6) that is internal and being threadedly engaged therewith, rotary screw rod (6) top is fixedly connected with rotation hand wheel (8), the rotation The fixing sleeve (7) of connection fixed thereto is arranged on screw rod (6) shaft part, the lateral wall of fixing sleeve (7), which is provided with, to hold down assembly (24);
The workpiece polishing mechanism includes fixed frame (12), rotary screw rod (13), grinding disc (14) and the guide rod (17) in upright state, The rotary screw rod (13) is installed on fixed frame (12), and rotary screw rod is arranged with screw-casing with matching on (13) (15), screw-casing (15) avris is fixed with guide sleeve (16), and guide rod (17) is interspersed in guide sleeve (16) inside and grinding disc (14) It is articulated with guide rod (17) and is provided with restriction sliding slot (29), limit on the end of rotation tubing string (2), fixed frame (12) the bar wall Determine to be provided with the restriction sliding block (18) that sliding cooperates up and down therewith in sliding slot (29), limits sliding block (18) end face and guide sleeve (16) End is fixedly connected, and guide rod (17) is provided with baffle (20) far from the one end of grinding disc (14), and baffle (20) passes through holddown spring (19) it is connected to and limits sliding block (18) end face, be additionally provided on the downside of the polishing table (1) to drive rotation tubing string (2) rotation With the power mechanism of rotary screw rod (13) positive and negative alternate rotation.
2. reducing steel tube bar device for grinding outer wall according to claim 1, which is characterized in that on supporting plate (3) end face It is provided with non-slip mat (5).
3. reducing steel tube bar device for grinding outer wall according to claim 1, which is characterized in that hold down assembly (24) are Four and annular spread in fixing sleeve (7) side wall, hold down assembly (24) include compression bar pipe (26) and be fixed on fixing sleeve (7) side wall Restriction set (27), the compression bar pipe (26) is internally provided with the oscillating rod (25) for sliding cooperation therewith, oscillating rod (25) it is outer End is hinged with setting in the hinged seat (28) for limiting set (27) inside, and the oscillating rod (25) is hinged with hinged seat (28) Place, which is located at, to be limited on the outside of set (27) port.
4. reducing steel tube bar device for grinding outer wall according to claim 3, which is characterized in that on the downside of the polishing table (1) It is additionally provided with base plate (23), base plate (23) upper surface is fixed in more supporting leg column (30) bottom ends.
5. reducing steel tube bar device for grinding outer wall according to claim 3, which is characterized in that the power mechanism includes turning The dynamic transmission horizontal axis (9) being installed on supporting leg column (30), transmission horizontal axis (9) one end, which is connected to, to be arranged in supporting leg column (30) side Driving motor (11) on wall, is driven horizontal axis (9) and rotation tubing string (2) bottom end is provided with drive bevel gear (10), two biographies Dynamic bevel gear (10) is meshed, and transmission horizontal axis (9) is also set up there are two opposite incomplete bevel gear (22), and two are not exclusively bored Rotating bevel gear (21) of the gear (22) with setting in rotary screw rod (13) bottom end alternately engages.
6. a kind of steel pipe pole polishing system comprising reducing steel tube bar device for grinding outer wall a method as claimed in any one of claims 1 to 5.
CN201910057326.0A 2019-01-22 2019-01-22 Reducing steel pipe pole outer wall grinding device Active CN109605149B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910057326.0A CN109605149B (en) 2019-01-22 2019-01-22 Reducing steel pipe pole outer wall grinding device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910057326.0A CN109605149B (en) 2019-01-22 2019-01-22 Reducing steel pipe pole outer wall grinding device

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CN109605149A true CN109605149A (en) 2019-04-12
CN109605149B CN109605149B (en) 2020-07-28

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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110509147A (en) * 2019-07-15 2019-11-29 深圳供电局有限公司 Grinding device
CN110524336A (en) * 2019-08-30 2019-12-03 潍坊雷腾动力机械有限公司 A kind of adaptive grinding tool of vertical crankshaft
CN110524331A (en) * 2019-09-06 2019-12-03 海宁市映通汽车用品有限公司 Tubular member grinding device in a kind of automobile manufacture
CN111551364A (en) * 2020-05-07 2020-08-18 北京铁道工程机电技术研究所股份有限公司 Lead screw running-in mechanism and running-in method
CN112192405A (en) * 2020-10-14 2021-01-08 江门市盈光不锈钢制品有限公司 Automatic polishing equipment for stainless steel kettle
CN112207647A (en) * 2020-10-14 2021-01-12 田小华 Pipeline inner and outer wall grinding device
CN112588725A (en) * 2020-12-02 2021-04-02 常庆庆 Cutting device for hardware processing
CN112975631A (en) * 2021-02-24 2021-06-18 常熟理工学院 Steel pipe end outer wall grinding device for building
CN114473656A (en) * 2022-04-18 2022-05-13 江苏康盛管业有限公司 Steel pipe surface grinding device
CN115302355A (en) * 2022-10-11 2022-11-08 启东市恒通橡胶制品厂(普通合伙) Full-automatic grinding equipment for surface of variable-diameter plastic pipe
CN115383583A (en) * 2022-10-10 2022-11-25 福建易辰达机械有限公司 Grinding machine

Citations (5)

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Publication number Priority date Publication date Assignee Title
JPH1177493A (en) * 1997-09-08 1999-03-23 Toyoda Mach Works Ltd Grinding device and grinding method
CN201415350Y (en) * 2009-06-12 2010-03-03 中国西电电气股份有限公司 Abrading clamp of tapered of porcelain sleeve
CN102806497A (en) * 2012-07-24 2012-12-05 苏州市建军纺机配件厂 Clamp for grinding machining of outer ring of tapered roller bearing
CN106346321A (en) * 2015-07-15 2017-01-25 睿励科学仪器(上海)有限公司 Grinding machine
CN108972303A (en) * 2018-08-20 2018-12-11 陈伟 A kind of taper barrel polissoir

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1177493A (en) * 1997-09-08 1999-03-23 Toyoda Mach Works Ltd Grinding device and grinding method
CN201415350Y (en) * 2009-06-12 2010-03-03 中国西电电气股份有限公司 Abrading clamp of tapered of porcelain sleeve
CN102806497A (en) * 2012-07-24 2012-12-05 苏州市建军纺机配件厂 Clamp for grinding machining of outer ring of tapered roller bearing
CN106346321A (en) * 2015-07-15 2017-01-25 睿励科学仪器(上海)有限公司 Grinding machine
CN108972303A (en) * 2018-08-20 2018-12-11 陈伟 A kind of taper barrel polissoir

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110509147A (en) * 2019-07-15 2019-11-29 深圳供电局有限公司 Grinding device
CN110524336A (en) * 2019-08-30 2019-12-03 潍坊雷腾动力机械有限公司 A kind of adaptive grinding tool of vertical crankshaft
CN110524331A (en) * 2019-09-06 2019-12-03 海宁市映通汽车用品有限公司 Tubular member grinding device in a kind of automobile manufacture
CN111551364B (en) * 2020-05-07 2022-05-10 北京铁道工程机电技术研究所股份有限公司 Lead screw running-in mechanism and running-in method
CN111551364A (en) * 2020-05-07 2020-08-18 北京铁道工程机电技术研究所股份有限公司 Lead screw running-in mechanism and running-in method
CN112192405A (en) * 2020-10-14 2021-01-08 江门市盈光不锈钢制品有限公司 Automatic polishing equipment for stainless steel kettle
CN112207647A (en) * 2020-10-14 2021-01-12 田小华 Pipeline inner and outer wall grinding device
CN112588725A (en) * 2020-12-02 2021-04-02 常庆庆 Cutting device for hardware processing
CN112588725B (en) * 2020-12-02 2022-11-08 深圳市华银精密制品有限公司 Cutting device for hardware processing
CN112975631A (en) * 2021-02-24 2021-06-18 常熟理工学院 Steel pipe end outer wall grinding device for building
CN114473656A (en) * 2022-04-18 2022-05-13 江苏康盛管业有限公司 Steel pipe surface grinding device
CN114473656B (en) * 2022-04-18 2022-06-21 江苏康盛管业有限公司 Steel pipe surface grinding device
CN115383583A (en) * 2022-10-10 2022-11-25 福建易辰达机械有限公司 Grinding machine
CN115302355A (en) * 2022-10-11 2022-11-08 启东市恒通橡胶制品厂(普通合伙) Full-automatic grinding equipment for surface of variable-diameter plastic pipe

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